The full list, presenting a total of 153 companies categorized as small, medium-sized or large companies—with 25-49 employees, 50-99 employees and more than 100 employees respectively— is available on Entrepreneur.com. The comprehensive ranking of U.S.-based businesses exhibiting high-performance cultures was created in partnership with culture management software and service provider CultureIQ.

“A high-performance culture leads not only to employee engagement but also to measurable business results,” says Greg Besner, founder and CEO of CultureIQ. “These organizations show us that great companies start with great culture.”

The rankings for all companies were determined using CultureIQ’s methodology for measuring high-performance cultures. Employees at each company received a survey of multiple-choice questions and the answers were used to assess a company’s strength across 10 core components of culture–collaboration, innovation and communication to name a few. The companies with the highest scores became the Top Company Culture list in ranking order.

To be considered for the ranking, a company must have at least 25 employees, have been founded before Jan. 1, 2015 and be headquartered in the U.S.